Until January 2018, David Park led the product team for Facebook's Mobile App Install Ads business.
He had been dabbling in the blockchain space and making investments since the end of 2013, but it was only then that he decided to jump into it full time — joining Refereum as its COO later that year. (By the end of his time at Facebook he was "thinking about crypto 24/7," he admitted.)
Refereum is a startup that uses cryptocurrency to provide reward tokens to users of other apps and services to encourage growth; it has worked with triple-A game Battlefield, as well as a variety of blockchain projects.
"It was super exciting to think about jumping into this industry early on and being a player early on," he said, citing the example of how Facebook accelerated the "career trajectories" of early employees — saying he viewed similar potential for people working in blockchain.
He's also a founder of Orca, a syndicate of current or former Facebook employees who invest in crypto projects.